/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.beam.sdk.io.common;

import java.io.IOException;
import java.net.ServerSocket;

/** This class contains helper methods for networking related tasks in tests. */
public class NetworkTestHelper {
  /** @return Next available port in local interface */
  public static synchronized int getAvailableLocalPort() throws IOException {
    try (ServerSocket socket = new ServerSocket(0); ) {
      return socket.getLocalPort();
    }
  }
}
